reCAPTURE Site Key missing and not working?

Hello,

Im trying to get reCAPTURE to work on the login and register tabs.

I have added my Secret key to the reCAPTURE settings but there is no input field for the Site Key? How do you expect this to work without the field?

Any assistance on getting this working would be appreciated as its quite important to reduce spam.

Many thanks,
Graeme